test: drop TagImplOptions-specific e2e coverage (#839)

Remove #570 v9 object-literal registration test and unused metadata_file setup in #573.

Co-authored-by: Cursor <[email protected]>

test/e2e/issues.spec.ts

@@ -1,21 +1,9 @@
-import { TopLevelToken, TagToken, Tokenizer, Context, Liquid, Drop, toValueSync, LiquidError, IfTag, Tag } from '../..'
+import { Tokenizer, Context, Liquid, Drop, toValueSync, LiquidError, IfTag } from '../..'
 import { spawnSync } from 'child_process'
 import { resolve as resolvePath } from 'path'
 const LiquidUMD = require('../../dist/liquid.browser.umd.js').Liquid
 
 describe('Issues', function () {
-  class MetadataFileTag extends Tag {
-    str: string
-    constructor (token: TagToken, remainTokens: TopLevelToken[], liquid: Liquid) {
-      super(token, remainTokens, liquid)
-      this.str = token.args
-    }
-    async render (ctx: Context) {
-      const content = await Promise.resolve(`{{${this.str}}}`)
-      return this.liquid.parseAndRender(content.toString(), ctx)
-    }
-  }
-
   it('unicode blanks are not properly treated #221', async () => {
     const engine = new Liquid({ strictVariables: true, strictFilters: true })
     const html = engine.parseAndRenderSync('{{huh | truncate: 11}}', { huh: 'fdsafdsafdsafdsaaaaa' })
@@ -374,17 +362,8 @@ describe('Issues', function () {
     const html = await liquid.parseAndRender(tpl)
     expect(html).toMatch(/^\s*This is a love or luck potion.\s+This is a strength or health or love potion.\s*$/)
   })
-  it('tag registration compatible to v9 #570', async () => {
-    const liquid = new Liquid()
-    liquid.registerTag('metadata_file', MetadataFileTag)
-    const tpl = '{% metadata_file foo %}'
-    const ctx = { foo: 'FOO' }
-    const html = await liquid.parseAndRender(tpl, ctx)
-    expect(html).toBe('FOO')
-  })
   it('date filter should return parsed input when no format is provided #573', async () => {
     const liquid = new Liquid()
-    liquid.registerTag('metadata_file', MetadataFileTag)
     const tpl = `{{ 'now' | date }}`
     const html = await liquid.parseAndRender(tpl)
     // sample: Thursday, February 2, 2023 at 6:25 pm +0000